My "To" dropdown list when writing a new email. Invader names!!!

22. November 2012 · Write a comment · Categories: Hotmail, Outlook.com · Tags: , , , , , , ,
When I open the window to write a new email,  I go to the "To" drop down box to select a contact. At the very bottom of the contact list in bold black capitals is a choice "MDSR".
I cannot delete it and I want to. The only information that ever was revealed about it was an email from some drunk sorority site. Now it's embedded.
I need an option to delete it. It does NOT appear in my regular contact list,  the "People" page. Prior to the conversion to the People app, it was still on that drop down list and I couldn't delete it then either. 

Now what?